The double mark after the 6 indicates inches. If it was a single mark (') - that would mean feet.
A P mint mark indicates that the coin was minted in the US Mint in Philadelphia.http://wiki.answers.com/What_does_the_p_stamp_mean_on_a_coin#ixzz19wdgY2lP
By mark for feet I assume you mean equivalent of cm or some such. If you were to describe my height in feet and inches I would be 6'4" This means I am 6 foot 4 inches.
The term "ipsilateral dorsal dorsum of the foot" refers to the upper surface of the foot on the same side of the body as a specified reference point. "Ipsilateral" indicates that it is the same side, while "dorsal" pertains to the top surface of the foot. This area includes structures such as the metatarsal bones, tendons, and skin. It is often examined in clinical assessments for injuries or conditions affecting the foot.
A single quote is used for feet; double quotes for inches. Example : He was 6'2'' tall.
An exclamation mark indicates an emotional reaction.
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No mint mark indicates that it was made in Philadelphia.
No mint mark indicates that the coin was minted in Philadelphia.
double prime symbol ( ″ ),
No mint mark indicates that the coin was minted in Philadelphia.
period
The mint mark P on American coins indicates that the coin was minted in Philadelphia.
No mint mark indicates that the coin was minted in Philadelphia.
The 4 marks are one, holy, catholic, and apostolic. The mark word catholic indicates that all are welcome - it means "open to all, universal"
It's called a mint mark, not a state mark. The lack of one indicates that the coin was minted in Philadelphia.